74471865660 has 288 divisors, whose sum is σ = 245367263232. Its totient is φ = 18211584000.

The previous prime is 74471865631. The next prime is 74471865703. The reversal of 74471865660 is 6656817447.

74471865660 is a `hidden beast` number, since 7 + 4 + 4 + 71 + 8 + 6 + 566 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 74471865597 and 74471865606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 36097789 + ... + 36099851.

It is an arithmetic number, because the mean of its divisors is an integer number (851969664).

Almost surely, 2^74471865660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74471865660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122683631616).

74471865660 is an abundant number, since it is smaller than the sum of its proper divisors (170895397572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74471865660 is a wasteful number, since it uses less digits than its factorization.

74471865660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2393 (or 2388 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 74471865660 in words is "seventy-four billion, four hundred seventy-one million, eight hundred sixty-five thousand, six hundred sixty".